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The sulphite is redissolved as bisulphite by treatment with sulphurous acid.
2
Generally speaking, the sulphuretted hydrogen and sodium sulphite methods are to be preferred.
3
There are three classes of wood pulp; mechanical wood, soda process, and the sulphite.
4
Traces of sulphite and the mineral olivine were also present.
5
The soda process wood and sulphite wood pulp are both made by chemical processes.
Usage of so3 in English
1
C. with fuming sulphuric acid (containing about 40-50% SO3), and by this treatment is converted into anthraquinone-b-monosulphonic acid.
2
In natural DS preparations and their fractions, this activity (as well as the antithrombotic activity in an animal model) appears to require IdoA2SO3-containing sequences.